Issued Patents All Time
Showing 25 most recent of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8766567 | Battery control and protective element validation method | Anil P. Ghode, Donald C. Herres | 2014-07-01 |
| RE41466 | Fuse saving tester for fused circuit | Daniel D. Lionberg, Matthew M. Crass, William G. Bruno | 2010-08-03 |
| 7565844 | Torque-angle instrument | Matthew M. Crass, Matthew S. Marquette, Richard J. Hackl, Paul J. Beyerl, Marvin D. Thorell | 2009-07-28 |
| 7148698 | Fuse saving tester for fused circuit | Daniel D. Lionberg, Matthew D. Crass, William G. Bruno | 2006-12-12 |
| D530166 | Electronic torque wrench | David F. Brekke, David D. Curry, Brian Cutler, Charles P. Davis, David Duvan +1 more | 2006-10-17 |
| 7082866 | Ratcheting torque-angle wrench and method | — | 2006-08-01 |
| 6981436 | Electronic torque wrench | David F. Brekke, David D. Curry, Brian Cutler, Jay Kurtovic, Charles P. Davis | 2006-01-03 |
| 6968759 | Electronic torque wrench | David F. Brekke, David Duvan, Rolf Segger | 2005-11-29 |
| D497294 | Electronic torque wrench | David F. Brekke, David D. Curry, Brian Cutler, Charles P. Davis, David Duvan +1 more | 2004-10-19 |
| 6680777 | Automatic transmission fluid tester | Gary S. Wollert | 2004-01-20 |
| 6512361 | 14/42-volt automotive circuit tester | — | 2003-01-28 |
| 6313611 | Low power indication circuit for lead acid battery pack | Michael R. Mowry | 2001-11-06 |
| 6262559 | Portable auxiliary charging battery pack for thin metal film battery power pack | Daniel M. Eggert | 2001-07-17 |
| 6262560 | Battery pack discharge recovery circuit | Daniel D. Lionberg, Daniel M. Eggert | 2001-07-17 |
| 6259228 | Battery pack and protective pouch therefor | Bryan L. Doyle, Daniel M. Eggert, Gordon A. Putney, Richard W. Prince | 2001-07-10 |
| 6252378 | Usage counter for portable jump-starting battery unit | Matthew M. Crass | 2001-06-26 |
| 6222342 | Jump start battery pack and enclosure therefor | Daniel M. Eggert, Michael R. Mowry, Matthew M. Crass | 2001-04-24 |
| 6199642 | Reversible ratcheting power tool with synchronized motor and ratchet control | Joshua M. Beer, Dennis A. Nowak | 2001-03-13 |
| 6070506 | Ratchet head electronic torque wrench | — | 2000-06-06 |
| 5898108 | Evaporative emission tester | Daniel Mieczkowski, Mark J. Hasenberg, Matthew M. Crass, Robert D. Braun, Edward T. Gisske +1 more | 1999-04-27 |
| 5773978 | Battery impedance monitor | — | 1998-06-30 |
| 5763764 | Evaporative emission tester | Daniel Mieczkowski, Mark J. Hasenberg, Matthew M. Crass, Robert D. Braun, Edward T. Gisske +1 more | 1998-06-09 |
| 5610327 | Knock sensor-triggered timing light with visible laser retro-reflecting control | Mark A. Hoferitza, Matthew M. Crass | 1997-03-11 |
| 5589644 | Torque-angle wrench | Matthew M. Crass, Gordon A. Putney, Randy J. Niesen, Dean J. Iwinski | 1996-12-31 |
| 5426371 | Automatic battery and charging system tester with motor-driven carbon pile loading | Glenn E. Salley, Sohrab S. Rameshk, Dennis G. Thibedeau, Ronald D. Geisler, Paul A. Willems +1 more | 1995-06-20 |